Roll polisher



Dec. 31, 1929. 1

ROLL POLI SHER Filed June 1928 2 Sheets-Sheet l In wen to r L 5. G'ro0e6 B QM 4015M Attornqy T. s. GROVES 1,742,070

Dec. 31, 1929. T, s GROVES 1,742,070

ROLL POLISHER Filed June 1928 2 Sheets-Sheet 2 Inventor v I Z 5.6 70086)Amrmgy Fatented Wee, Fl, lFHF THOMAS S. GROVES, F LJEJECHIB'URG,ULT-IIENNSYLVANIA ROLL JPOJLISHEl-"t Application filed June 6,

The present invention relates to improvements in attachments for rollingmills and has reference more particularly to aroll polisher.

One of the important objects of the present invention is to provide adevice that can be readily and easily positioned on the housing of arolling mill, and wherein the device includes a polishing stone that isadapted to to engage with the surface of the corresponding roll formaking the surface of the roll smooth.

A further object is to provide a roll polisher which includes afulcrumed lever on which is rockably mounted the abrading elementcarrying unit, so that the abrading element will be permitted toproperly position itself against the surface of the roll during the useof the device.

Still a further object of theinvention is to provide a roll polisher ofthe above men tioned character which is simple in construction,inexpensive, strong and durable, and further well adapted to the purposefor which it is designed.

Other objects of the invention will become apparent as the nature of theinvention proceeds and when taken in connection with the accompanyingdrawings.

In the acompanying drawings, forming a part of this application,

Figure 1 is a side elevation of the roll polisher embodying myinvention, showing the same in use for polishing the rolls of a rollingmill.

Figure 2 is a detail of the abrading element carryinp; unit, parts beingshown in section. A

Figure 3 is a sectional view, taken app'ront e0 mately on the line 33 ofFigure 2, looking upwardly, and

Figure 4 is a detail perspective view of one of the polishing stones.

In the drawings, wherein for the purpose of illustration is shown thepreferred embodiment of my invention, the numeral 1 designates generallythe housing of a conventional rolling mill, and mounted in the housingare the upper and lower rolls 2 and 3 V respectively. After a certainlength of time,

1928. Serial No. 283,33Q.

the rolls must be resurfaced or polished, and heretofore, this polishinghas been accomplished by the use of a lever and plank. However, thedefects of polishing the rolls in this manner are that the rolls willbecome scored, and the stone will not remain flat against the surface ofthe roll. On the other hand, if light stones are used to avoid scoring,the work is too slow for the ordinary mill work. i

lit is therefore one of the principal aims of the present invention toprovide a roll polisher that will save considerable time and labor andwill at all times be positive and efiicient in its operation, and tothis end, I provide an elongated lever 4 that is provided at its innerend with a hook 5 for engagement with a cross rod 6 arranged in thehousing 1, above the upper roll 2, whereby to provide a fulcrum for theupper end of this elongated lever. An additional hook 7 is carried bythe intermediate portion of the lever 4C for a purpose to be presentlydescribed.

Forming a salient part of the present invention is the abrading elementcarrying unit designated by the numeral 8 and the same comprises alongitudinally curved metallic plate 9 of rectangular shape, the endsthereof being disposed downwardly as at 10 to form stops for engagementwith the outer side faces of the abrading stones 11. The polishingstones are secured rigidly on the concaved face of the plate 9, by meansof the slidable members 12 that are also curved to conform with thecontour of the concaved face of the plate 9.

The intermediate portion of the curved plate 9 is formed with thelongitudinally ex tending slots 13 through which extend the bolts 141,the heads of the bolts engaging with the convex face of the plate 9,while the threads extend through suitable openings provided therefor inthe respective slidable.

members 12.

A. nut 15 is threaded on the threaded end of each belt for engagementwith the concaved .face of each member 12 as clearly shown in Figure 2.

The sides of each polishing stone 11 are tapered, while each stone iscurved longitudinally with the convex face bearin against the concaveface of the plate 9, so t at the concaved faces of the polishing stoneswill be exposed for engagement with the roll to be polished. Byloosening the nuts 15 the members 12 may be moved inwardly toward thecenter of the plate 9, whereby to remove worn polishing stones andreplace the same with new ones whenever necessary, as'is readily obviousfrom the construction shown in the drawings.

A head 16 is swivelly associated with the center of the curved plate 9and this head is formed at its upper end with an eye for dispositionwithin a clevis 17 formed on the lower end of the bolt 18, a pin 19extending through registering openings formed in the arms of the yoke orclevis and through the eye portion of the head 16 wherebythe plate 9 andthe polishing stone carried thereby will be rockably supported in theclevis or yoke.

The upper end of the bolt 18 extends through an opening providedtherefor in the inner end portion of the lever 4 and a nut 20 isthreaded on the upper ends of this bolt for engagement with the upperface of the lever in the manner as clearly shown in Figure 1, therebyoperatively connecting the abrading unit and carrying elements 11 to thelever.

\Vhen the parts are arranged as shown in full lines in Figure 1, it willbe readily obvious that when the outer end of the lever 4 is swundownwardly, the polishing stone carried by the plate 9 will be broughtinto engagement with the upper roll 2 for polishing the same, in themanner well known in the art, and by rockably mounting the abradingelement carrying unit, the polishing stones will automatically positionthemselves against the surface of the roll to be polished.

In polishing the lower roll 3, the lever 4 is disengaged from the rod 5,and is reversed, as indicated by the dotted lines in Figure 1 and thenthe hook 7 engages with the rod 21 arranged at the lower portion of thehousing 1 and this will provide a fulcrum for the lever so that theabrading stones may be brought into engagement with the roll 3 and bymanipulating the lever, the concaved faces of the polishing stone willbe brought into contact with the roll to polish the same in an obviousmanner.

It will thus be seen from the foregoing description, that I haveprovided a roll polisher that will, at all times, be positive andefficient in its operation and by reason of its simplicity, the same canbe readily and easily attached or removed from a rolling mill, withoutnecessitating any alterations. Byalso employing the slidably adjustablemembers 12, polishing stones of various sizes may be mounted on theplate 9 and held thereon in a rigid manner.

A polisher of this character will permit coarse abrading material at theforward end for speedy grinding, and finer at the rear to reduce thescore marks and procure a smooth finish. When pressed against anycylindrical object the polisher becomes automatically adjusted to thesurface. It is to be understood that any alterations that permit thesame'automatic movement, any variation in size, shape and arrangement ofparts, and any diverse method of application may be resorted to withoutdeparting from the spirit of the invention or the scope of the appended0 mm.

Having thus described my invention, what I claim as new is:

A roll polisher comprising a lever adapted to be fulcrumed upon a rollhousing, a curved plate, a head swivelly connected to the centralportion of the plate, a yoke carried by said lever, said head beingrockably mounted in said yoke, a pair of polishing stones provided withconcave and convex faces, the ends of the curved plate being disposedlaterally for engagement with the outer sides of the polishing stones,members slidable on the concaved face of the plate to rigidly secure thepolishing stones with their convex faces against the concaved face ofthe plate, the concaved faces of the polishing stones adapted to bearagainst the surface of a roll when the lever 1s swung in one direction.

In testimony wherof I atiix my signature.

THOMAS S. GROVES.

